Hello,

The recurring issue with the two juniper plants dying in the same location could be due to a variety of factors. Here are some potential causes and considerations:

Soil Conditions: Junipers require well-drained soil. If the soil is too compacted or has poor drainage, it could lead to root rot. Even though you’ve replaced some of the soil, there might still be an underlying issue with drainage or soil composition in that specific area.

Watering: Both overwatering and underwatering can be detrimental. Junipers do not like to sit in waterlogged conditions, which can happen if the area has poor drainage or if there’s excessive watering. Conversely, if the area is drier than the rest of the juniper row, it could lead to dehydration.

Sunlight Exposure: Insufficient sunlight can weaken junipers, making them more susceptible to diseases and pests. Ensure that these two plants are not shaded by larger plants or structures.

Pests and Diseases: Pests like spider mites, juniper scale, and bagworms, or diseases such as twig blight and root rot, could be affecting these plants. It’s important to inspect them for signs of infestation or disease. I know you stated that you saw no insects - just be on the lookout

Environmental Stress: Factors such as wind, salt spray from the lake, or even the proximity to the shoreline could create a microclimate that is less favorable for these two plants compared to the others.

Root Competition:If there are other larger plants nearby, their roots could be outcompeting the junipers for nutrients and water.

Chemical Herbicide: Junipers can excrete chemicals that act as a natural herbicide, potentially affecting the soil in that particular area.

To address the problem, consider the following steps:

Improve Drainage: Amend the soil with organic matter to improve its structure and drainage capabilities.

Check Watering Practices: Ensure that the plants are being watered deeply but infrequently and adjust based on the soil moisture level.

Monitor Sunlight: Make sure the plants are receiving adequate sunlight and are not being overshadowed.

Inspect for Pests/Diseases: Look for signs of pests or diseases and treat them accordingly.

Test Soil: Have a soil test done to check for pH and nutrient imbalances.

Consider Plant Spacing: Ensure that there is enough space between the junipers and other plants. Details on soil testing at this link: Get Started | MSU Soil Test

Blue Pacific Junipers thrive in well-draining soil with a pH level between 6.5 and 7.5. It’s important to maintain this pH range to prevent nutrient deficiencies and other growth issues. If the soil is too acidic or alkaline, it can adversely affect the plant’s health. To ensure optimal conditions, it’s recommended to test the soil before planting and amend it as necessary. Most average garden soils fall within a pH range of 6.0 to 7.0, which is also suitable for junipers

For a confirmed and precise identification of the problem, I recommend you send all your images by e-mail to the MSU Plant & Pest Diagnostics Lab. The experts there can also provide you with the best treatment options. Their email is <personal data hidden> - Please include your name – The lab will let you know if they need a sample sent. FYI – The lab may also ask for additional images.

Their website is at this link:

Plant & Pest Diagnostics (msu.edu)

Their Contact Information is at this link:

Contact Us - Plant & Pest Diagnostics (msu.edu)

This link will explain the details of submitting a sample to MSU Plant & Pest Diagnostics Lab:

Submit Samples - Plant & Pest Diagnostics (msu.edu)

I hope this helps!